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Igniting interface magnetic ordering of magnetic topological insulators by building a van der Waals heterostructure can help to reveal novel quantum states and design functional devices. Here, we observe an interesting exchange bias effect,…

The emerging magnetic van der Waals (vdW) materials provide a platform for exploring novel physics regarding magnetism in low dimensions and developing ultrathin spintronic applications. Here, we investigate the ultrafast dynamics of…

Interface physics in oxide heterostructures is pivotal in material's science. Domain walls (DWs) in ferroic systems are examples of naturally occurring interfaces, where order parameter of neighboring domains is modified and emerging…

Materials Science · Physics 2015-10-08 Josep Fontcuberta , Vassil Skumryev , Vladimir Laukhin , Xavier Granados , Ekhard K. H. Salje

We report thermal expansion and heat capacity studies on Li$_2$FeSiO$_4$ single crystals which enable us to investigate the critical behavior in the magnetically quasi-two-dimensional (2D) material. Pronounced $\lambda$-shaped anomalies at…

Exchange bias (EB) is a cornerstone of modern magnetic memory and sensing technologies. Its extension to the realm of two-dimensional (2D) van der Waals (vdW) magnets holds promise for revolutionary advancements in miniaturized and…

Mesoscale and Nanoscale Physics · Physics 2024-06-05 Jifeng Shao , Xiaolong Yin , Chunhao Bao , Sirong Lu , Xiaoming Ma , Shu Guo , Le Wang , Xi Zhang , Zhiyue Li , Longxiang Li , Yue Zhao , Tingyong Chen

Bond-dependent magnetic interactions, particularly those described by the Kitaev model, have emerged as a key pathway toward realizing unconventional magnetic states such as quantum spin liquids and topologically nontrivial excitations,…

We propose a new class of magnetic proximity effects based on the spin dependent hybridization between the electronic states at the Fermi energy in a non-magnetic conductor and the narrow spin split bands of a ferromagnetic insulator.…

Mesoscale and Nanoscale Physics · Physics 2023-12-20 C. Cardoso , A. T. Costa , A. H. MacDonald , J. Fernández-Rossier

Long-range magnetic orders in atomically thin ferromagnetic CrI3 give rise to new fascinating physics and application perspectives. The physical properties of two-dimensional (2D) ferromagnetism CrI3 are significantly influenced by…

Materials Science · Physics 2019-11-13 Kai Guo , Bowen Deng , Zhongtai Shi , Yue Li , Xin Wang , Lei Bi , Li Zhang , Haipeng Lu , Peiheng Zhou , Linbo Zhang , Yingchun Cheng , Bo Peng

It has been long hoped that the realization of long-range ferromagnetic order in two-dimensional (2D) van der Waals (vdW) crystals, combined with their rich electronic and optical properties, would open up new possibilities for magnetic,…

Mesoscale and Nanoscale Physics · Physics 2017-05-02 Cheng Gong , Lin Li , Zhenglu Li , Huiwen Ji , Alex Stern , Yang Xia , Ting Cao , Wei Bao , Chenzhe Wang , Yuan Wang , Z. Q. Qiu , R. J. Cava , Steven G. Louie , Jing Xia , Xiang Zhang

The extraordinary properties of a heterostructure by stacking atom-thick van der Waals (vdW) magnets have been extensively studied. However, the magnetocaloric effect (MCE) of heterostructures that are based on monolayer magnets remains to…

Materials Science · Physics 2023-04-26 Weiwei He , Ziming Tang , Qihua Gong , Min Yi , Wanlin Guo

Magnetic order is usually associated with well-defined magnon excitations. Exotic magnetic fluctuations with fractional, topological or multipolar character, have been proposed for radically different forms of magnetic matter such as…

The discovery of spontaneous magnetism in van der Waal (vdW) magnetic monolayers has opened up an unprecedented platform for investigating magnetism in purely two-dimensional systems. Recently, it has been shown that the magnetic properties…

Mesoscale and Nanoscale Physics · Physics 2022-01-19 Eliot Heinrich , Xin Li , Benedetta Flebus

Two-dimensional (2D) ferromagnetic (FM) semiconductors with high Curie temperature have long been pursued for electronic and spintronic applications. Here we provide a general strategy to achieve robust FM state in bilayer CrI3 of the…

Materials Science · Physics 2020-09-23 Nanshu Liu , Si Zhou , Jijun Zhao

We studied magnetic states and phase transitions in the van der Waals antiferromagnet VBr3 by specific heat and magnetization measurements of single crystals in high magnetic fields and by ab initio density functional theory calculations…

Research in two-dimensional (2D) materials has experienced rapid growth in the past few years. In particular, various layered compounds exhibiting quantum phenomena, such as superconductivity and magnetism, have been isolated in atomically…

Materials Science · Physics 2019-07-17 Hyun Ho Kim , Adam W. Tsen

We have experimentally studied the renormalized effective mass m* and Dingle temperature T_D in two spin subbands with essentially different electron populations. Firstly, we found that the product (m*T_D) that determines damping of quantum…

Strongly Correlated Electrons · Physics 2015-06-22 V. M. Pudalov , M. E. Gershenson , H. Kojima

When the transition temperature of a continuous phase transition is tuned to absolute zero, new ordered phases and physical behaviour emerge in the vicinity of the resulting quantum critical point. Sr3Ru2O7 can be tuned through quantum…

Strongly Correlated Electrons · Physics 2021-10-25 C. Lester , S. Ramos , R. S. Perry , T. P. Croft , M. Laver , R. I. Bewley , T. Guidi , A. Hiess , A. Wildes , E. M. Forgan , S. M. Hayden

We have investigated the spin fluctuations in the langasite compound Ba3NbFe3Si2O14 in both the ordered state and as a function of temperature. The low temperature magnetic structure is defined by a spiral phase characterized by magnetic…

Strongly Correlated Electrons · Physics 2015-05-19 C. Stock , L. C. Chapon , A. Schneidewind , Y. Su , P. G. Radaelli , D. F. McMorrow , A. Bombardi , N. Lee , S. -W. Cheong

Domain walls (DWs) in perpendicularly magnetized nanotracks (PMNTs) with interfacial Dzyaloshinskii-Moriya interaction (DMI) have become the primary objects of theoretical and experimental interest due to their technological suitability in…

Computational Physics · Physics 2018-11-22 Yue Zhang , Mao-Kang Shen , Zai-Dong Li , Xiao-Fei Yang , Long You

Two-dimensional magnetic van der Waals (vdW) materials can show a variety of topological nontrivial spin textures, such as Bloch- or N\'eel-type stripe, skyrmion or bubble domains under certain external stimuli. It is critical to understand…